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I'm trying to swap out the main menu of a page if it uses a specific page template.

This was working perfectly until I added a 2nd menu to the page.

I would greatly appreciate any guidance on how to target only the primary-menu and not all the menus on the page. I tried 'primary-menu' but did not work.

In functions.php:

add_filter('wp_nav_menu_args', function ($args) {
  if (is_page_template('page-template-custom.php')) {
    $args['menu'] = 'custom-menu';
  }
  return $args;
});

Thanks very much!

2
  • 1
    Does this answer your question? Two different menus for two different locations?
    – Michael
    Mar 13 '20 at 22:55
  • Thanks is brilliant! Thank you Michael! I had to make a small modification though as the brackets may be misplaced and swapped "is_page" with "is_page_template" and voila!
    – Chumtarou
    Mar 14 '20 at 0:45
1

The $args the filter is receiving includes the theme_location used when the menu was registered, so assuming your main location is primary, you can add the following to your if statement to target only that menu:

    if ( 
      is_page_template( 'page-template-custom.php' ) && 
      isset( $args['theme_location'] ) &&
      'primary' === $args['theme_location'] )
    ) { ...

See: https://developer.wordpress.org/reference/hooks/wp_nav_menu_args/
and
https://developer.wordpress.org/reference/functions/register_nav_menu/
for reference

1
  • This is perfect and works great! While this is similar to the link provided by Micheal, this solves my issue exactly for page templates - much gratitude thank you!
    – Chumtarou
    Mar 14 '20 at 0:53

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